Fountain-pen.



PATENTED AUG. 18, 1908.

J. G. COFPIN.

FOUNTAIN PEN. APPLICATION FILED APR.1s a,19oa.

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FOUNTAIN-PEN.

Specification of Letters Patent.

Patented Aug. 1s, 190s.

Application filed April 19, 1906. Serial No. 312,572.

To (di firaom it may concern.'

Be it itnown that l, JOSEPH G. Corwin, residing at Yorcester, in the county of Norcester and St ate of iil'assaehusotts, have invented certain new and useful improvements in llountain-Pens, of which the following is a. full, clear, and exact description, such will enable others skilled in the art to which it appertains to make and use the same.

This invention relates broadly to improvements in pen constructions, but, it more particularly concerns certain adaptations therein'whereby they may be emploved with eminent advantages as .so-called self-filling pens, it will be conducive to clearness to disclose an illustrative. embodiment of the. invention in such. form.

.ln'cordingly, this invention has in view, among other objects, the provision of a simple and cll'ecvttive construction which is adapted to be lilled without the employm nt of extraneous appliances for the purpose.

Y tnother object residing within the contemplation ot' 'this invention is to s) improve the construction of self-filling pens that, by the exercise of new functions, they may be made subject to easy manipulation to a greater degree than has heretofore obtained.

ntithcr object oi' this invention is to produoe a fountain pen in which the pen portion will normady be contained within tho ink reservoir and thereby be preserved in a. condition which is especially suitable for use in writing, and whereby such pen portion will be prevented from drying or thc ink caking in the intefstices thereof.

nother objet-t is to devise a self-filling fountain pen which, from va mechanical standpoint, will in usage possess a high dcgrcc oi" effectiveness and which, structurally considered will be of the greatesty possible simplicity consonant with the ends attained thereby.

A broad object is to provide an eilicient, durable, non-leaking fountain pen of simple, and inexpensive construction.

Many other objects and ad vfantages will be. inpart. obvious and in part pointed out hercinafter.

The invention accordingly consists in the features of ctmstruction, comhimttions of parts and arrangements of elements which will be exempliiied in the embodiment their@- hereinafter set forth, and the. scope ol' the application of which will be indicated in the appended claims.

in order that this invention may be more clearly understood and made comprehei'isiblo to others skilled in its relating arts, drawings illustratimgr such emlmdiment of the same aro appended as a part ot' this specification, and while. the controlling principles of the invention may be otherwise applied by modifications falling within the scope of the claims, the herein disclosed type is that which will ordinarily be preferable to employ in practice and which with respect to its purposes and application is regarded as a, substantial improvement'y over the. many implied and obvious variations of the same.

ln the accompanying drawings, wherein are set forth one or more of the various possible embodiments of my invention, Figure l is a median section showing the arrangement of parts when the fountain pen is entirely closed for being carried in the pocket. Fig. 2 is a similar section showing the position of the various parts when they caps aty both ends aro removed preparatory to filling the device. Fig, 3 a like section showing the pcn cap removed and positioned upon the inlety closing cap, which is normally fixed in plat-t` upon the. lower end of the reservoir to close the same against the outflow of ink. This view furthermore shows the pen portion in a protrudcd position and ready for writing. Fig. 4 is a side View of a barrel embodying a translucent panel through which the. height of the ink therein may be observed. Fig. 5 is a sectional view showing the form of threads preferably tnnployed in holding the caps in position. I

ln carr \'ing outy this invention, b v means of the specificv embodiment thereof here onrployed for illust rativo purposes, a main bar .rel portion l having open ends is employed.

A t its lower end such barrelis interiorly screwthreaded, as indicated by 2, adapting it for engagement with a subsidiary cylinder 3 which to that end is exteriorly provided with screw-tlueads 4. This subsidiaryv cylinder carries an annular shoulder 5, which nor` mally abuts with the main barrel, thereby locking ther subsidiary cylinder tight-ly in place.. By this arrangement, the subsidiary cylinder may be readily removed from the.

main barrel so that access to the working parts may be conveniently had and the same may accordingly be easily cleaned .or rcplaced. The ower end of the subsidiary 5 chamber is also provided with threads at 6, and

therebelow it reduces to a nozzle 7, the orifice of which is normally closed by a small ball Jvalve 8, of rubber or other suitable material. This valve is properly .restrained so as to f; move within the desired limits, by means of a perforate collar 9 which is located thereover a sufiicient distance to aiiord the necessary free movement of the ball valve. To guard against any possible leakage at thissend, a

1s closure cap 10 is detachably secured upon the nozzle by means of interiorly running threads 11 which engage with the aforesaid threads 6 on the subsidiary cylinder. The bottom of the cap may preferably be furnished 'with a 2'0 cork or rubbergdisk 12, to effect a positive closure of nozzle 7 by eontacting with the oliiice thereof, as shown in Figa l1. V- t It may here be noted that terms cfsthej nature Of upper and lowert--are used"Y throughout this description and the following clai'ms as referring to the portions of the pen.

spring 16 normally tends-to protrude the pen t rough the end opening of the main barrel and, to accomplish this purpose7 this spring abuts at its upper end a shoulder or enlargement 17 upon which the penis mounted, and at its lower end such spring rests upon a re- 40 straining perforate cap 18. This enlargement 17 is preferably provided with an annular depression for a purpose hereinafter described.

When out of use, the parts comprising the fountain pen are in the position shown by Fig. 1, in which a nib protecting cap 19 is shown 4upon the'upper end df'the main barrel, being removabl secured .in place through the instrumenta ity of suitable screw threads 20 which -are positioned. at`.the 'inner end of the bore of the cap, the remaining portion of which is s mooth. These sicrew threads are preferablyi-of a fractional type and as shown comprisev two threaded vporftions u 'on opposite sides of themember upon Whic they are positioned and extending something less than `ninet degrees about the circumference thereof; ,t will readily be seenthat by means of such construction the `caps may be securely fixed in osition `with a single turn. .It is to be note in this connection that the end of f the main barrel is provided with an integrally saches surface aorded by the inner end of the protective cap 19 so as to effect a complete clouse. When such ca is so positloned, it will depress the pen an mountings therefor as ment with a stud 22 whic is adapted to contact with the end of the'pen as shown and retract the same into the barrel. Upon a removal of such protective cap, the pen will, through the elasticity of spring 16, at once ment of the head 17 with the annular shoubl closingthe pen against leakage. 'The out-l piston 15.'

The morde of filling the device, while quite and 10 will be removed, as shown in Y This, nozzle end 7 may new 'be inviserted int'o asuitable supply of ink, and by ineans of the cap 19, the penand parts affixed thereto will be reciprocated after the fashion of a pump. This will very uickly drawv ink into the pen to the desired extent, as the valve 8, whilepermtting ink to flow into the cylinder, will not allow such ink to return.

It' is to be understood of course that the piston 15, as well as the 4rod 14, upon which 1t is mounted, iit within .the 'parts wherein they slide with a sufficient degree of looseness to permit the iiow of the ink past the same and into themain reservoir upon the piston being forced'downwardly into the ink the pen. This looseness of fit, as will be obvious, does not interfere with the slight suc- `to this flow,*and the wet surfaces of the mov'- ing parts are s'uiiicient to seal the joints to accomplish the object in vlew.

amount .of ink within the pen, I prefer to emtransparent material suchas celluloid or the like.

ent material, which may be given any de-- sired surface ornamentation to give the same a more attractive appearance. The iillin of the en should sto as soon as the ink as reac ed a level suc tliat'theY en is either and there ore it will be kept in excellentcondition for writing, not drying up or caking as be observed in this connection that the body' of the pen will displace sufficient ink so that no over-fiow will Vtake place when it is opened brought inte abutment with a corresponding sure of the upper end when the pen is not in shown in Fig. 1, this bein the result of abuty rise and protrude until checked by the abutder- 21, such abutment,I however,I entirelyi ward movement of the penis retarded byobvious, may be briefly explained. ,The end l imprisoned beneath the same in the iilling of f tion required to draw-ink into the lowerchamber, as'there is no appreciable resistance In order to yeasily ascertain theexact ploy anarrow panel 23 of some suitable' I In some instances it may be advisable to construct the entire pen of such transparwholly or artiaiiysubmergedw en retracted in the ordinary construction. It will also for use. :i

By reason of the ,annular depression within the enlargement 17, this part may be thrust 1g@ 1 formed annular portion 21, which is tapering morose-section on both the inner and outer surfaces. The outer surface 1s designed to be vzo within the ink reservoir without a tendeney of the ink to spurt out about the edges thereof, the displaced fluid merelv flowing over the lower shoulder and imo the recessed portion.

lt will thus be seen from the foregoing that an embodiment has been formulated which is Well adapted to attain the several ends and objects of this invention. rl`he oomv plete device is .free from all undesirable pro- 'ections and it is therefore well-suited for eing conveniently .arried Without any liability of becoming dis-arranged through inadvertent pressures upon such projections. An advantage also follows, inasmuch as the labor of constructing this pen redueed to a minimum, owing to the fact that the parts are all so formed as to be capable of being readily madev in accordance with usual oonstruetural operations and therefore no unusual skill or elaborate instruetioiis with respect to the artisans is necessary, nor is eX- pensive machinery required.

As many changes could be made in the above construction and many .apparently Widely different embodiments of my invention could be made Without departing from the scope thereof, I intend. that all matter Contained in the above description or shown in the accom ninying drawing shall be interpreted as il ustrative and not in a limitingT sense.

l desire it also to be understood that the language used in the following claims is intended to cover all f the generic and specifici features of the invention herein described and all statements of the scope or the inventtion, which, a matter of language, might be said to fall therebetween.

Having'thus described my invention, what I claim as new, `and desire to secure by Letters Patent is zi. in a fountain pen, a reservoir providing a )ump cylinder having an inlet, 'a cheek lve for said inlet,a piston adapted to be reoiprocated within said pump cylinder', and an expansile spring normally n'iaintaining said piston in a predetermined position.

2. In a fountain pen, a reservoir providing a pump cylinder having a suitable inlet, a detachable cap adapted to close said inlet, a Check valve for said inlet, and a piston adapted to be roeiplocated/Within said pump ('ylinder to `lill the reservoir with ink through said. inlet when said oap is detarlud.

f3. ln a fountain pen, an ink reservoir providing a pump rylinder having an inlet, a

oap adapted lo be attached to said reservoir to close said inlet, a cheek valve for said inlet, a piston adapted to he rociprooatvd Within said pump oylinder, and an expausile spring normally maintaining said piston in a predetermined position.

4.' in a fountain pen, a reservoir, a. pen reciprocating therein and normallv nrotrluling through an end opening in said reservoir, a spring tending to maintain said pen in said position whereby a closure of said end opening Will be effec-ted, and a detachable cap having interrupted threads adapted to inter- 'fit with complementary threads positioned on said reservoir and having an interiorly protruding rod adapted to abut with and retract said pen and simultaneously eileet a Closure of said opening.

5. In a fountain pen, a reservoir providing a pump cylinder having a suitable inlet, a detachable cap providing a sealing pad adapted to close the end of said inlet, a cheek valve for said inlet, and a piston adapted to be reeipro lated wit-hin said pump Cylinder to iill the same with ink through said inlet when said rap is detached.

6. ln a fountain pen, a reservoir providing' a pump cylinder having an inlet, a detachable cap having a sealing pad adapted to close the end of said inlet, a piston mounted to reciprocate Within said pump cylinder and a spring normally maintaining said piston in a predetermined position.

7. In a fountain pen, an ink reservoir providing a pump cylinder having an inlet, a cap adapted to be attached to said reservoir and having a. sealingl pad to close said inlet, a cheek valve for said inlet, a piston adapt-ed to be reeiproeated Within said pump cylinder near said inlet, and an expansile spring normally maintaining said piston in a predetermined position.

8. In a fountain pen, a reservoir providing a pump cylinder having'a suitable inlet, a eheelr valve for said inlet, a piston adapted to be reeiproeated Within said pump cylinder to fill the reservoir with ink through said inlet, and a pen carried by said piston and nor mally protruding through an opening in said reservoir.

Q. In a fountain pen, a reservoir providing a pump' cylinder having an inlet, a piston mounted to reciprocate' Within said pump cylinder to iill the reservoir,'a pen carried bg said piston and adapted to protrude throng an opening in said reservoir, and a s ring normally maintaining said piston in sait protruded position.

i0.- ln a fountain. pen, an ink reservoir providing a pump cylinder having an opening at ono ond, a piston mounted to reciprocate within said pump Cylinder to till the reservoir through an inlet at its other end, a pen earried by said piston and normally protruding through said opening and adapted to thereby ellevt a elosure thereof, and an expansile means urging said p en into sueh position.

ll. ln a fountain pen, a reservoir having at opposite ends an opening and an inlet respectively and providing apnmp cylinder, a piston mounted to reciprocate Within' said pump cylinder to lill the reservoir, a pen fixed to said piston and adapted to protrude through seid opening, e spring normally org in seid pen into simil position, smi e deteoiiu ab e oep. adopted to be positioned. on esiti. reservoir to retreot seid een theiewitiiin and simultaneously eieot e o osiiieo seid oye?? ings. j

12. in e fountain pen,` e .ieeeivoii laeviiig at opposite ends en opening end. eo inlet sind providing e. pump eyiiiider. pieton adapted to reciprocate Witlliii'eeid pump o dinde?? to ill the reservoir through seid in et, e pen movable with seid piston and adapted. to pro trude through seid opening, 'e spring non' mellyy urgiiig seid peil into seid osition to effect e closure of seid opening., e deteoiiable ce. adopted to 1oe eoiedito ieseivolr au havmgim extension edoptedto abut with and retreot seid pifotiudinggpon into 13. In e fountain pen, e reservoir oei/img at opposite ends en opening and en iniet and providing a. puiiip `ovlindeiv;z` o cheek velve foi" preventing return low tlilioiigh Seid inlet, e piston adopted to ieoipreoete Within seid pump'oylinder to 'fill the iesei'voir through seid inlet, a pen .movable with seid pieton. and adapted to protrude through seid opening, e spring normally urging seid pen iiito said position to effect e closure of seid open ing, and e. detachable oep edapteii to oe po sitioned on seid reservoii` end having mi iii.- tei'iorly protruding rod adopted to abut with and retract seid pen iiito seid. reserxf'oii end ieee ing.

Lili.

to pioieet from. seid reservoir into operativo position end to oe forced within. said reset voix, end means adapted to reterdthe move# ment of seid pen-eeriying means. y i5. lo e fountain pen, e r'eservoij-greletivelj,T movable pen-cerrying ineens adapted to piojeot :from seid-reservoir into operative position end to be ioreed Within seid resetiii ev fountain pen, e reservoir rele tively movable pen-oerry1ng means adopted.

eiliiiilteileouely eieot e closure of seid open- Voir, e spring tending to force sf'tid-'pe1oerry carrying ineens being a opted in operative position to seal seid reservoir.

iii' the presence of two Witnesses.

Y v JSEPH G. COFFN.

' Witnesses'. l.

iFREDK. J'. BARNARD, EDWARD B. GLASGOW.

iii testimony whereof I eilfix my sigrietuiei 

